Loom attachment



1934. P. A. BURNETT ET AL 1,946,730

LOOM ATTACHMENT Filed May 18, 1933 2 Sheets-Sheet l I nvenfors flllomeyPatented Feb. 13, 1934 UNITED STATES PATET OFFICE LOOM ATTACHMENTApplication May 18, 1933. Serial No. 671,756

Claims.

The present invention relates to an attachment for magazine looms andhas for its primary object to provide, in a manner as hereinafter setforth, a device embodying a novel construction,

5 combination and arrangement of parts through the medium of which theends from the bobbins in the magazine will be kept taut at all times sothat when the full bobbin is transferred to the shuttle, the ends willbe taut and the shuttle will thread properly without breaking thethread.

Other objects of the invention are to provide an attachment of theaforementioned character which will be simple in construction, strong,durable, highly efficient and reliable in operation, compact and whichmay be manufactured and installed at low cost.

All of the foregoing and still further objects and advantages of theinvention will become apparent from a study of the followingspecification, taken in connection with the accompanying drawingswherein like characters of reference designate corresponding partsthroughout the several views, and wherein:

Figure 1 is a view in front elevation of an attachment in accordancewith the present invention.

Figure 2 is a plan view thereof.

Figure 3 is an end elevational view with the roll assembly supportomitted.

Figure i is a detail view in perspective of the oscillating shaft.

Referring now to the drawings in detail, it will be seen that theembodiment of the invention which has been illustrated comprises anangular supporting bar 1 which is mounted on the mega- Zine (not shown)of the loom, as at 2. The bar 1 has mounted on one end a roll assemblywhich is designated generally by the reference numeral 3. The rollassembly 3 includes a pair of opposed plates 4 which are securedtogether in spaced relation to each other in any suitable mannor, as atJournaled in the plates i and projecting beyond the outermost of saidplates is a pair of parallel shafts 6 having felt covered friction rolls'7 fixed on their outwardly projecting portions. Slots 8 are providedfor one of the shafts 6 for iloatingly mounting one of the rolls '7, thefloating roll being yieldingly engaged with the other roll 7 by a spring9 mounted between the plates 4. Fixed on the shafts 6 between the platesi are ratchet Wheels 10. The spring 9 rides on the hub portion or" oneof the ratchet Wheels 10.

5-5 The reference numeral 11 designates a tubular housin which issecured on the bar 1 through the medium of suitable brackets 12. Mountedfor oscillation in the tubular housing 11 is a shaft 13, said shaftprojecting beyond the ends of the housing and terminating, at one end,in a crank arm 14 which is yieldingly maintained in engagement with theusual hammer 15 of the loom by a spring 16.

Fixed on the other end portion of the shaft 13 is an arm 17 havingmounted on its free end pawls 18 which are operatively engaged with therelatively reversed ratchet Wheels 10 for driving the rolls '7 inopposite directions. If desirable, or necessary, suitable dogs may beprovided for preventing retrograde rotation of the ratchet wheels 1c.The reference numeral 19 designates an angular stop for the arm 17 whichis adjustably mounted on the adjacent end portion of the tubular housing11.

Briefly, the operation of the device is as follows: When the hammer 15of the loom goes down to force a bobbin into the shuttle, the spring 16is permitted to actuate the shaft 13 for retracting the pawls 18. It maybe well to here mention that the ends from the bobbins in the magazinepass between the rolls '7. When the hammer 15 returns to its inoperativeposition, the shaft 13 is actuated thereby in the opposite directionagainst the tension of the spring 16 and the rolls '7 are actuated bythe pawls 18 for eliminat- 5 ing the slack from the threads extendingfrom the remainder of the bobbins in the magazine.

It believed that the many advantages of a loom attachment constructed inaccordance with the present invention will be readily understood, andalthough the preferred embodiment of the invention is as illustrated anddescribed, it is to be understood that changes in the details ofconstruction and in the combination and arrangement of parts be resortedto which will fall within the scope of the invention as claimed.

What is claimed is:

1. An attachment for eliminating slack in the threads from the bobbinsin the magazine of a loom comprising a pair of opposed, coacting rollsfor the reception therebetween of the threads, a shaft mounted foroscillation on the loom, resilient means for actuating the shaft in onedirection, means operatively connecting the shaft to the loom foractuation by said loom in the opposite direction, an arm on the shaft,relatively reversed ratchet wheels connected with the rolls, and pawlsmounted on the arm and operatively engaged with the ratchet wheels foractuating said ratchet wheels in opposite directions when the shaft isactuated by the loom.

2. An attachment for eliminating slack in the threads from the bobbinsin the magazine of a loom comprising a pair of opposed, coacting rollsfor the reception therebetween of the threads, relatively reversedratchet wheels connected with the rolls, a shaft mounted for oscillationon the loom, a spring operatively connected with the shaft for actuatingsaid shaft in one direction, a crank arm on one end of the shaft engagedwith the loom hammer for actuating the shaft in the opposite direction,an arm on the other end portion of the shaft, and pawls mounted on thearm and operatively engaged with the ratchet wheels for actuating saidratchet wheels in opposite directions when the shaft is actuated by theloom hammer.

3. An attachment for eliminating slack in the threads from the bobbinsin the magazine of a loom comprising a supporting bar mounted on theloom, a pair of spaced, opposed plates mounted on the supporting bar, ashaft journaled in the plates, another shaft rotatably and floatinglymounted in the plates, opposed coacting rolls fixed on the shafts forthe reception therehetween of the threads, resilient means yieldinglyurging the roll on the floating shaft into engagement with the otherroll, relatively reversed ratchet wheels fixed on the shafts between theplates, a tubular housing mounted on the rod, a shaft mounted foroscillation in the housing, an arm fixed on one end portion of thethird-named shaft, pawls mounted on the arm and operatively engaged withthe ratchet wheels for actuating said ratchet wheels in oppositedirections, and means for oscillating the third-named shaft.

4. An attachment for eliminating slack in the threads from the bobbinsin the magazine of a loom comprising a supporting bar mounted on theloom, a pair of spaced, opposed plates mounted on the supporting bar, ashaft journaled in the plates, another shaft rotatably and fioatinglymounted in the plates, opposed coacting rolls fixed on the shafts forthe reception therebetween of the threads, resilient means yieldinglyurging the roll on the floating shaft into engagement with the otherroll, relatively reversed ratchet wheels fixed on the shafts between theplates, a tubular housing mounted on the rod, a shaft mounted foroscillation in the housing, an arm fixed on one end portion of thethird-named shaft, pawls mounted on the arm and operatively engaged withlhe ratchet wheels for actuating said ratchet wheels in oppositedirections, and means for oscillating the third-named shaft, thelast-named means comprising a spring operatively connected with thethird-named shaft for actuating the same in one direction, and a crankarm on said third-named shaft operatively engaged with the loom hammerfor actuation thereby for actuating the third-named shaft in theopposite direction against the tension of the spring.

5 An attachment for eliminating slack in the threads from the bobbins inthe magazine of a loom comprising an angular bar mounted on the loom, apair of spaced, opposed plates mounted on one end portion of the bar,said plates having slots therein, a shaft journaled in the plates,another shaft operable in the slots, coacting rolls fixed on the shaftsfor the reception therebetween of the threads, resilient meansyieldingly urging the second named shaft toward the first named shaftfor frictionally engaging the rolls. relatively reversed ratchet wheelsfixed on the shafts between the plates, a tubular housing mounted on therod, a shaft journaled longitudinally in the housing and projectingbeyond the ends of said housing, a spring operatively connected with thethird-named shaft for actuating same in one direction, a crank arm onone end of the thirdnamed shaft engaged with the loom hammer foractuating said third-named shaft in the opposite direction against thetension of the spring, an arm fixed on the other end portion of theshaft, a stop on the tubular housing engageable with the second namedarm for limiting rotation of the third named shaft under impulsion 1 bythe spring, and pawls mounted on the second

